I've been a Joplin user as well for some time and decided to switch to something different too. I looked at Trilium as a possible alternative but decided it wasn't for me. Seems like their self hosted sync server doesn't have much in terms of proper authentication at all? At least from what I've seen from the setup and when I skimmed through the docs. However there does seem to be encryption available which at least seems to be something. The interface also seems very cluttered and has a wild amount of features I'll never even dream of using extensively. I needed something more simple and streamlined.

With that in mind and as I use Authentik for authentication and user management I decided to look elsewhere. I'm currently testing Jotty/Jotty.page, however they want to format it, and it has everything I need. But it lacks encryption and a proper mobile app. It does however have PWA support which is at least something. I do also enjoy that it is pretty much completely directory based. Even the users and user sessions and shared notes are just JSON files. This makes active backups a breeze and disaster recovery is going into a users directory and making a copy of their directories and .md files. It's growing on me to say the least.